Extracting drainage network from high resolution DEM in Toowoomba, Queensland

Paper

Liu, Xiaoye and Zhang, Zhenyu. 2010. "Extracting drainage network from high resolution DEM in Toowoomba, Queensland." Queensland Surveying and Spatial Conference 2010 (QSSC 2010). Brisbane, Australia 01 - 03 Sep 2010 Brisbane, Australia.
Paper/Presentation Title

Extracting drainage network from high resolution DEM in Toowoomba, Queensland

Presentation TypePaper
AuthorsLiu, Xiaoye (Author) and Zhang, Zhenyu (Author)
Journal or Proceedings TitleProceedings of the 2010 Queensland Surveying and Spatial Conference (QSSC2010)
Number of Pages12
Year2010
Place of PublicationBrisbane, Australia
Web Address (URL) of Paperhttp://www.spatialsciences.org/images/QLD/QSSC/Program/xiaoye_liu_qssc_paper_revised.pdf
Conference/EventQueensland Surveying and Spatial Conference 2010 (QSSC 2010)
Event Details
Queensland Surveying and Spatial Conference 2010 (QSSC 2010)
Event Date
01 to end of 03 Sep 2010
Event Location
Brisbane, Australia
Abstract

Detailed delineation of drainage networks is the first step for many natural resource management studies. Compared with field survey and interpretation from aerial photographs or topographic maps, automation of drainage network extraction from DEMs is an efficient way and has received considerable attention. Toowoomba City is the principal activity centre for the Darling Downs, Queensland. The development of the Surat Energy and Resource Province will continue to drive population growth in Toowoomba, placing high pressure on water and other resources in the region. This study aims to extract drainage networks from a high resolution DEM to support the strategy for improving the management of the impacts of stormwater, flooding, bank stability,pollutants, water quality and creek health in Toowoomba City. Composition parameters of the drainage network including the numbers of streams and the stream lengths are derived from the high resolution DEM. Contributing area thresholds and their impacts on the extraction of drainage networks are also discussed.

Keywordsdigital elevation model; drainage network; stream order; Toowoomba; Condamine catchment; Murray Darling Basin
ANZSRC Field of Research 2020400508. Infrastructure engineering and asset management
410406. Natural resource management
401304. Photogrammetry and remote sensing
Public Notes

No evidence of copyright restrictions preventing deposit.

Byline AffiliationsDepartment of Surveying and Land Information
Institution of OriginUniversity of Southern Queensland
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